Sentences with word «polariton»

The high - performance photodetector uses so - called surface plasmon polaritons, highly concentrated electromagnetic waves at metallic - dielectric interfaces, to combine optics and electronics on smallest space.

The researchers were able to further demonstrate that the resonance wavelength of the hyperbolic polaritons confined within these antennae was dependent only upon the aspect ratio (height / diameter), and was nominally independent upon the actual size and / or shape — demonstrating that antennas could be defined for a given application simply by controlling this ratio, thereby making them compatible to a wide array of device form - factors.

The analysis revealed that a single parameter determines the fixed angle along which polariton rays propagate with respect to the surface of the spheroids.

Periodic arrays of cone - shaped hexagonal boron nitride (hBN) nanoantennas, depicted magnified image above, were used to confine hyperbolic polaritons in all three dimensions.

The research team also demonstrated that the resonance response exhibited not a single mode, but four separate series, and according to Caldwell, a change in the wavelength and / or the angle of the incoming light with respect to the sample surface could isolate each series, providing the first complete description of these novel, three - dimensionally confined hyperbolic polariton modes.

«The experimental quest to detect orbiting polaritons has already begun.»

«The trajectories of the trapped polariton rays are very convoluted in most instances,» Fogler said.

Polaritons reach the quantum limit, providing a new and promising platform of strongly coherent and interacting particles.

Pascale Senellart obtained her PhD from University Paris 6 in 2001 for her studies on microcavity polaritons.

They hybridize with the «vacuum» electromagnetic field in the cavity to form quasiparticles known as polaritons.

The formed hybrid states (exciton polaritons) have unique chemical and physical properties and can be viewed as a linear combination of light (vacuum field) and matter (molecules).

When light waves zip along between the layers, they stir up ripples in the electrons at the metal - insulator interfaces called surface plasmon polaritons.

These surface phonon polaritons are analogous to electron oscillations in metals or doped - semiconductors, called plasmons, but offer the benefit of low losses and operation in the infrared to terahertz spectral regions.

This enabled the researchers to fundamentally probe the novel optical properties within these materials and demonstrate the highly directional, low loss hyperbolic polaritons that are confined within the volume of the antennas.

The particles of light, called phonon polaritons, disobey standard laws of reflection as they bounce through the granules, but their movement isn't random.

The polaritons are not only particles but also waves that form interference patterns.

Unlike three - dimensional light waves, surface polaritons «hold on» the boundary between two media.

We can «compress» it, transforming into a surface plasmon polariton.

For the surface plasmon polariton to exist, a metal, or more specifically, an electron gas in the metal, is needed.

«Surface plasmon polaritons have previously been proposed to be used as information carriers for optical communication, but the problem is that the signal is rapidly attenuated propagating along plasmonic waveguides.

Overcoming the diffraction limit is possible with transition from photons to surface plasmon polaritons, which are collective excitations emerging due to interaction between photons and electron oscillations on the boundary between a metal and an insulator.

«Our idea is to compensate the surface plasmon propagation losses by pumping extra energy to surface plasmon polaritons.

Plasmonic interferometers make use of the interaction between light and surface plasmon polaritons, density waves created when light energy rattles free electrons in a metal.

«Since these polaritons are perfectly coupled to the light that forms them, any changes in their behavior would indicate a change in the waveform of light,» said Vohnsen.

To reach new levels of precision, the researchers considered using the well - studied resonance behavior of quasiparticles known as surface plasmon polaritons (SPPs), which respond to even extremely small - scale wavefront distortions.

First observation of the quantized exciton - polariton field and effect of interactions on a single polariton

These unusual waves are called hyperbolic surface polaritons.

Variety of low cost, stable and catalytically active water splitting materials such as Fe2O3 and BiVO4 have poor charge transport characteristics leading to low PEC efficiency.1, 2 Surface plasmon polaritons (SPP) excited in nanopatterned Al concentrate optical fields in the UV and visible ranges, thus enhancing light absorption within few tens of nanometers of semiconducting material deposited over the Al substrate.